The method contains three easy steps. Firstly, you calculate the horizontal size between reverse partitions. Secondly, use a easy mathematical method to find out the size of the ridge board you may want and the variety of boards to purchase. Lastly, decide the components that will have an effect on the outcomes of your calculation and think about them the place applicable.
An important reality to recollect is that you will want to sq. each A and B values, then add them collectively when utilizing the method above. As soon as that’s completed, you possibly can take the sq. root of the sum and that may equal the gap between the other corners of your roof. To find out the ridge board size, simply double this quantity. Lastly, take the brand new end result and divide it by the size of the ridge board you resolve to go together with, rounding as much as the closest complete quantity, and that may let you know the variety of ridge boards you will want to finish your undertaking.
It is very important think about a few components that will have an effect on your calculation, equivalent to in case your roof has overhangs and for those who plan on putting in a ridge vent. To account for overhangs, simply double the measurement you get from the A measurement. Moreover, for those who plan to put in a vented ridge, you possibly can subtract 0.33 toes from the variety of ridge boards you want. It is because vented ridge boards have to overlap one another by 6 inches.
How To Calculate Ridge Board
To calculate the size of a ridge board, it’s worthwhile to know the size and pitch of the roof. The pitch is the angle of the roof, measured in levels. The commonest roof pitches are 4/12, 6/12, and eight/12.
As soon as you recognize the size and pitch of the roof, you should use the next method to calculate the size of the ridge board:
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Ridge board size = (size of roof x 2) / (12 / pitch)
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For instance, if in case you have a 20-foot roof with a 6/12 pitch, the ridge board size can be:
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Ridge board size = (20 toes x 2) / (12 / 6) = 20 toes
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Folks Additionally Ask
What’s a ridge board?
A ridge board is a horizontal board that runs alongside the height of a roof. It connects the 2 sides of the roof and gives help for the roof tiles or shingles.
How do I set up a ridge board?
To put in a ridge board, it’s worthwhile to first measure and reduce the board to the right size. Then, it’s worthwhile to nail the board in place alongside the height of the roof. It’s best to use galvanized nails and house them about 6 inches aside.
What if my roof has a distinct pitch?
The method for calculating the ridge board size will change relying on the pitch of your roof. You should use the next desk to seek out the right method in your roof pitch:
| Roof Pitch | Method |
|---|---|
| 4/12 | Ridge board size = (size of roof x 2) / 3 |
| 6/12 | Ridge board size = (size of roof x 2) / 2 |
| 8/12 | Ridge board size = (size of roof x 2) / 1.5 |
